An all gas-phase iodine laser using molecular iodine as atomic iodine donor

Taizo Masuda; Tomonari Nakamura; Masamori Endo

doi:10.1117/12.880233

15 November 2010 An all gas-phase iodine laser using molecular iodine as atomic iodine donor

Taizo Masuda, Tomonari Nakamura, Masamori Endo

Proceedings Volume 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 77510D (2010) https://doi.org/10.1117/12.880233
Event: 18th International Symposium on Gas Flow and Chemical Lasers and High Power Lasers, 2010, Sofia, Bulgaria

Abstract

The characteristics of an all gas-phase iodine laser (AGIL) that uses molecular iodine as a source of iodine atoms is studied. The laser is based on the energy transfer reaction between metastable NCl(a¹Δ) and ground state I(²P_3/2) atoms, which are produced by the electric discharge of a mixture of I₂ and He. At fixed flow rates of the chemical species, the laser output powers are measured at three different positions in a flow reactor. The output power is characterized by a function of the optical axis position and is reasonably reproduced by the numerical calculation. A repetitive pulse of laser output at 50 Hz with a duty factor of 40% is observed. The highest output power is 40 mW at 210 mm downstream from the mixing point of I/H/He and NCl₃. This is 80% of the output power generated from the conventional system using HI as an iodine donor. The measured results of the time resolved laser output power suggest that the output power of the I₂- AGIL is more sensitive to the electric discharge plasma intensity as compared to that of the HI-AGIL. An AGIL operated using I₂ could potentially have the same output power as that of an AGIL operated using HI if a continuous-wave electric discharge generator is used.

Citation Download Citation

Taizo Masuda, Tomonari Nakamura, and Masamori Endo "An all gas-phase iodine laser using molecular iodine as atomic iodine donor", Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 77510D (15 November 2010); https://doi.org/10.1117/12.880233

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KEYWORDS

Iodine

Chemical species

iodine lasers

Hydrogen

Molecules

Microwave radiation

Molecular lasers

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